Partition

Just the other day I had to repartition an external drive that had an EFI partition on it. It took a few minutes to figure it out so I thought I’d leave this here for myself and anyone else
that might stumble upon the post. Disclaimer of course is that please be sure on which disk and partition you are picking in the following steps so you don’t remove the wrong one and lose data.

Make sure the drive in question is connected and then:

Open a command prompt with elevated permission

Run diskpart

To see all of your disks, type
list disk

To select the disk, select disk #

Then select the partition with select partition #

And the last command to run is delete partition override

Now you can close diskpart and the command prompt. The EFI partition is gone :)